CVEs-PoC/2021/CVE-2021-28831.md

### [CVE-2021-28831](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-28831)
![](https://img.shields.io/static/v1?label=Product&message=n%2Fa&color=blue)
![](https://img.shields.io/static/v1?label=Version&message=n%2Fa%20&color=brightgreen)
![](https://img.shields.io/static/v1?label=Vulnerability&message=n%2Fa&color=brightgreen)

### Description

decompress_gunzip.c in BusyBox through 1.32.1 mishandles the error bit on the huft_build result pointer, with a resultant invalid free or segmentation fault, via malformed gzip data.

### POC

#### Reference
No PoCs from references.

#### Github
- https://github.com/ARPSyndicate/cvemon
- https://github.com/SebastianUA/Certified-Kubernetes-Security-Specialist
- https://github.com/SilveiraLeonardo/experimenting_mkdown
- https://github.com/aryanxsh/example-vulnerable-repo
- https://github.com/isgo-golgo13/gokit-gorillakit-enginesvc
- https://github.com/naokirin/dep_checkers_example
- https://github.com/thecyberbaby/Trivy-by-AquaSecurity
- https://github.com/thecyberbaby/Trivy-by-aquaSecurity